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BO Fenster

Practical guides

Tips to help you choose the right windows.

Clear guides written by our team to help you understand standards, materials and financial incentives available in Switzerland.

Buying guide4 min

PVC vs Aluminium: which window should you choose?

Insulation, price, lifespan and design: everything you need to know to compare the two materials and choose the right solution for your project.

Technical5 min

Understanding Uw, Ug and Uf values

These coefficients indicate the energy efficiency of your window. Learn to read them to avoid mistakes when buying or renovating.

Grants & subsidies6 min

Swiss cantonal grants 2025: what you can claim

Many Swiss cantons offer grants for replacing energy-inefficient windows. Find out about the conditions and amounts available.

Construction5 min

Windows for passive houses: the essential criteria

A passive house requires high-performance windows. Triple glazing, Uw ≤ 0.8, orientation and draught-proofing: the standards you need to meet.

Got a project in mind? Let’s talk.

BO Fenster guides you from selection to installation, with a free quote within 24h.

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